Clamp



FIG. 1 is an isometric view of a clamp;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The dashed lines in the FIGS. are for illustrative purposes only and form no part of the claimed design.

The dash-dot-dash lines in the FIGS. represent the border between claimed and unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a clamp, as shown and described. 